Question 1

How do I set up Prerender Python Starlette with FastAPI?

Accepted Answer

Install the package via pip, then add the PrerenderMiddleware to your FastAPI app's middleware stack. Configure the prerender_service_url and other parameters using environment variables or direct arguments, similar to the Starlette example in the README.

Question 2

Prerender Python Starlette vs prerender-node: which should I use?

Accepted Answer

Use Prerender Python Starlette if your backend is in Python with Starlette or FastAPI, as it integrates natively with ASGI. Choose prerender-node for Node.js-based applications, as it's designed for Express and other Node frameworks, offering better ecosystem support in that environment.

Question 3

Can I use this middleware without a Prerender token?

Accepted Answer

Yes, but it depends on your Prerender service setup. The middleware supports token-based authentication via the prerender_service_token parameter, but if your service doesn't require it, you can omit it. However, most Prerender services recommend tokens for security.

Question 4

How to cache prerendered pages to avoid hitting the service every time?

Accepted Answer

Implement the before_render and after_render callbacks to integrate with a caching system like Redis or an in-memory store. The README provides an example using async functions to store and retrieve HTML responses, reducing external API calls.

Question 5

Does Prerender Python Starlette work with Django?

Accepted Answer

No, not directly. Django is primarily a WSGI framework, and this middleware is designed for ASGI. You would need to migrate Django to ASGI using Daphne or similar tools, which adds complexity and might not be worth it for simple setups.

Question 6

What's the performance impact of adding this middleware?

Accepted Answer

It adds minimal overhead for non-crawler requests, as it only intercepts specific user-agents. However, for crawler requests, latency depends on the Prerender service's response time and your caching strategy, which could slow down initial page loads if not optimized.

Prerender Python Starlette

What is Prerender Python Starlette?

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